| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 55 |
1.2%
|
| 2 | 12 years old | 773 |
17.1%
|
| 3 | 13 years old | 1442 |
31.9%
|
| 4 | 14 years old | 1440 |
31.9%
|
| 5 | 15 years old | 757 |
16.7%
|
| 6 | 16 years old | 31 |
0.7%
|
| 7 | 17 years old or older | 23 |
0.5%
|
| Sysmiss | 73 |